RN HESI Dosage Calculations II Proctored Exam
Calculation
Penicillin G procaine 240,000 units intramuscularly is prescribed for a 4-year-old child who has a streptococcal respiratory infection. The medication vial is labeled 1,200,000 units/2 mL. How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
mL
Explanation & Rationale
To calculate the dosage, use the formula: D/H x Q = X - D is the desired dose, H is the dose on hand, Q is the quantity, and X is the amount to administer - Plug in the values: 240,000/1,200,000 x 2 = 0.4 - The nurse should administer 0.4 mL of penicillin G procaine
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